Half fitting prevention connector

ABSTRACT

A half fitting prevention connector includes a cylindrical case, a connector body, a lever, and a release lever. The release lever has a lock hole. An electromagnetic coil has a plunger. The plunger is arranged so as to face a microswitch. The electromagnetic coil is excited by connection between the signal terminal of the connector body and a signal terminal of a mating connector, and thereby moving the plunger toward the microswitch. The release lever is rotatable so that the plunger can enter the lock hole to press the microswitch in a state that the connector body is completely fitted with the mating connector and the plunger cannot enter the lock hole in a state that the connector body is half fitted with the mating connector.

TECHNICAL FIELD

The present invention relates to a power supply connector used incharging of, for example, an electric automobile, and to a half fittingprevention connector for preventing an arc discharge due to separationbetween terminals at the time of charging in a half fitted state fromoccurring by being constructed so that fitting work of both connectorsof the power supplying side and the power receiving side is done with alow insertion force and charging is not started unless both connectorsare completely fitted.

BACKGROUND ART

In a power supplying side connector fitted with a power receiving sideconnector fixed to an automobile body etc. of an automobile, the powersupplying side connector with a low insertion force including a lever ispublicly known (for example, see Patent Literature 1 (PTL 1)).

<Configuration of Power Supply Connector Described in PTL 1>

FIG. 6 is a longitudinal sectional view showing a power supply connectordescribed in PTL 1.

In FIG. 6, a power supplying side connector 100 includes a cylindricalcase 100C, a connector body 100M which is slidably attached to the fronthalf part of the cylindrical case 100C and advances against a repulsiveforce of a coil spring 100S by pressing the back end to a handle 100Hand internally receives plural terminals, the handle 100H pivoted by apin 100P2 inserted into a horizontally long hole of the back half partof the cylindrical case 100C, a lever 100L in which the middle ispivotally attached inside the cylindrical case 100C by a lever shaft100P1 and the distal end is pivoted by the pin 100P2 inserted into thehorizontally long hole of the cylindrical case 100C and a shaft hole ofthe handle 100H, and a release lever 101 for inhibiting a turn of thelever 100L in a state that the connector body 100M is fitted with themating connector, and when the lever 100L is gripped to the side of thehandle 100H, the action side distal end of the lever 100L turnscounterclockwise around the lever shaft 100P1 and the connector body100M is advanced in a direction of the mating connector to be fittedwith the mating connector.

At the completion of fitting, as shown in an enlarged view of FIG. 6(1),a locking protrusion 101K formed on the distal end of the release lever101 engages with a locking step 100K formed on the distal end of anaction part of the lever 100L, and the lever 100L is locked by therelease lever 101.

CITATION LIST Patent Literature

-   [PTL 1] JP-A-7-85926    <Problem of Power Supply Connector Described in PTL 1>

In the case of fitting and manipulating the power supply connector 100,it is normally constructed so that the power supply connector 100 can befitted by gripping the lever 100L, but an interference friction mayoccur between both connector housings during manipulation of fittinginto the mating connector 200 in the case of gripping the lever 100L.The interference friction is, for example, an interference frictionbetween a connector housing 200C1 of the mating connector and aconnector housing 100C1 shown in a circle A of FIG. 6 or an interferencefriction between a connector housing 200C2 of the mating connector and aconnector housing 100C2 shown in a circle B of FIG. 6. When suchinterference friction occurs, the lever 100L stops in a state that thelever 100L is not gripped completely, and this does not reach a state inwhich the locking protrusion 101K of the distal end of the release lever101 shown in the enlarged view of FIG. 6(1) engages with the lockingstep 100K of the lever 100L, and causes a state in which the lockingprotrusion 101K of the distal end of the release lever 101 shown in anenlarged view of FIG. 6(2) half engages with the locking step 100K ofthe lever 100L. In such a half engaging state, a power terminal 100T ofthe connector is mutually connected to a power terminal 200T of themating connector (see a circle C of FIG. 6), but the lever 100L stops inthe half engaging state, so that the lever 100L is not locked. As aresult, application of some shock may cause a situation in which thelocking protrusion 101K of the distal end of the release lever 101disengages from the locking step 100K of the lever 100L to return to theoriginal position from the half engaging state. Then, the power terminal100T of the connector is disconnected from the power terminal 200T ofthe mating connector from the mutually connected state of the terminals(that is, a state in charging), so that the power terminal 100T is alsodetached from the power terminal 200T of the mating connector and in thecase of detachment, an arc discharge may occur between the terminals todamage the terminals.

SUMMARY OF INVENTION Technical Problem

The invention has been implemented to solve the problem described above,and an object of the invention is to prevent an arc discharge fromoccurring between terminals by preventing a charging current fromflowing in a state of the half fitted condition by the configuration ofthe lever even when the interference friction occurs between bothconnector housings during manipulation of fitting with a matingconnector in a state that the lever is not gripped completely.

Solution to Problem

In order to achieve the object, the present disclosure of (1) to (3)relates to a half fitting prevention connector and is characterized bythe following.

(1) A half fitting prevention connector includes a cylindrical case, aconnector body that is slidably accommodated in a front half part of thecylindrical case and has a signal terminal, a lever that is rotatablyattached to the cylindrical case, and a release lever having an engagingpiece which engages with a locking piece for preventing a returningoperation of the lever or the connector in a state that the connectorbody is fitted with a mating connector by a rotational operation of thelever. The release lever has a lock hole. An electromagnetic coil havinga plunger is provided on the cylindrical case. A microswitch forstarting charging by a pressing operation of the plunger is provided onthe cylindrical case, the plunger being arranged so as to face themicroswitch. The electromagnetic coil is excited by connection betweenthe signal terminal of the connector body and a signal terminal of amating connector, and thereby moving the plunger toward the microswitch.The release lever is rotatable so that the plunger can enter the lockhole to press the microswitch in a state that the connector body iscompletely fitted with the mating connector and the plunger cannot enterthe lock hole in a state that the connector body is half fitted with themating connector.(2) For example, the release lever can be manipulated by releasingexcitation of the electromagnetic coil when the charging is thecompleted.(3) For example, a lock arm is branched from the release lever, and thelock hole is formed in the lock arm.

Advantageous Effects of Invention

According to the present disclosure of the above (1) as described above,even when the interference friction occurs between both connectorhousings and the electromagnetic coil is excited in the half fittedstate in which the lever is not gripped completely, the plunger cannotenter the lock hole, so that the microswitch is not operated andaccordingly charging is not started, with the result that an arcdischarge does not occur between the terminals (since a charging currentdoes not flow originally) when the lever returns from the half fittedstate to the original state and the terminals are separated.

According to the present disclosure of the above (2), theelectromagnetic coil for malfunction prevention can also be used as amember for half fitting prevention.

According to the present disclosure of the above (3), flexibility of thelayout of the electromagnetic coil improves by selecting the lock arm inany shape and length.

BRIEF DESCRIPTION OF DRAWINGS

FIGS. 1A to 1C are views describing a half fitting prevention connectoraccording to the present disclosure, and FIG. 1A is a front view of thehalf fitting prevention connector before fitting, FIG. 1B is alongitudinal sectional view of a main part of the half fittingprevention connector at the time of completely fitting, and FIG. 1C is afront view in the vicinity of a microswitch in FIG. 1B.

FIG. 2 is a longitudinal sectional view taken on a plane perpendicularto a shaft direction of the back half part of a cylindrical case.

FIG. 3A is a perspective view of a state before the microswitchaccording to the present disclosure operates, and FIG. 3B is a partiallysectional plan view in the vicinity of the microswitch of FIG. 3A.

FIG. 4A is a perspective view of the case where the microswitchaccording to the present disclosure operates in a completely fittedstate, and FIG. 4B is a partially sectional plan view in the vicinity ofthe microswitch of FIG. 4A.

FIG. 5A is a perspective view of the case where the microswitchaccording to the present disclosure operates in a half fitted state, andFIG. 5B is a partially sectional plan view in the vicinity of themicroswitch of FIG. 5A.

FIG. 6 is a front view showing a connector with a handle described inPTL 1.

DESCRIPTION OF EMBODIMENTS

<Half Fitting Prevention Connector According to the Present Disclosure>

Next, a half fitting prevention connector according to the presentdisclosure will be described based on FIGS. 1A to 1C.

FIGS. 1A to 1C are views describing the half fitting preventionconnector according to the present disclosure, and FIG. 1A is a frontview of the half fitting prevention connector before fitting, FIG. 1B isa longitudinal sectional view of a main part of the half fittingprevention connector at the time of completely fitting, and FIG. 1C is afront view in the vicinity of a microswitch in FIG. 1B. In FIG. 1, thehalf fitting prevention connector 10 is a power supplying side connectorfitted with a power receiving side connector of an automobile-mountedbattery, and includes a cylindrical case 10C, a connector body 10M, alever 10L, a handle 10H and a release lever 11. The cylindrical case10C, the connector body 10M, the lever 10L, the handle 10H and therelease lever 11 will hereinafter be described based on FIG. 1.

<Cylindrical Case 10C>

The connector body 10M (FIG. 1A) is slidably accommodated in the fronthalf part of the cylindrical case 10C, and the handle 10H is pivoted bya pin 10P2 (FIG. 1B) inserted into a horizontally long hole of the backhalf part of the cylindrical case 10C and further, the middle of thelever 10L is pivotally attached by a lever shaft 10P1 (FIG. 1B).

<Connector Body 10M>

The connector body 10M internally receives plural power terminals 10T1(FIG. 1B) and plural communication terminals 10T2 (FIG. 1B), and isslidably accommodated in the front half part of the cylindrical case10C. The connector body 10M is always urged backward (in a directionopposite to fitting) by a repulsive force of a coil spring 10S, butadvances in the cylindrical case 10C in a fitting direction by pressingthe back end of the connector body 10M against the repulsive force ofthe coil spring 10S by the handle 10H.

<Lever 10L>

The middle of the lever 10L is pivotally attached to the back half partof the cylindrical case 10C by the lever shaft 10P1, and the distal endof the lever 10L is formed in bifurcated lever support pieces 10LR, 10LL(see FIG. 2), and the lever support pieces 10LR, 10LL are pivoted by thepin 10P2 (FIG. 1B) inserted into the horizontally long hole formed in aninner wall of the cylindrical case 10C and a shaft hole formed in a sidewall of the handle 10H (described in detail in FIG. 2).

<Handle 10H>

The handle 10H is a tubular long body with a substantially L shape, andthe distal end of the handle 10H has a trough shape (see FIG. 2), andplural electric wire cables W of various sizes are inserted into thistrough-shaped inside, and the respective distal ends of the electricwire cables W are connected to the power terminals 10T1 or thecommunication terminals 10T2 of the inside of the connector body 10M.

The handle 10H is pivoted in the cylindrical case 10C together with thedistal end of the lever 10L by the pin 10P2 inserted into thehorizontally long hole of the back half part of the cylindrical case10C. Then, a side surface of the handle 10H is provided with a lockingpiece 10X (FIG. 1C) made of a triangular member, and this locking piece10X is constructed so as to engage with a locking claw XK (FIG. 1C)formed in the distal end of an action arm 11X (FIG. 1B) of the releaselever 11 (FIG. 1B) in a state that the mutual connectors are completelyfitted.

Therefore, when the lever 10L is gripped to the side of the handle 10H,the distal end of the lever 10L turns counterclockwise around the levershaft 10P1 in the drawing, and the handle 10H is advanced and theadvanced handle 10H presses the back end of the connector body 10M, andthe connector body 10M is advanced in the cylindrical case 10C againstthe repulsive force of the coil spring 10S and is fitted with the matingconnector (power receiving side connector).

<Release Lever 11>

The release lever 11 is means for inhibiting the return of the lever 10Lafter the connector body 10M becomes fitted with the mating connector bygripping the lever 10L.

As shown in FIG. 1B, the release lever 11 is formed in substantially a Tshape by the action arm 11X extending in a shaft direction of theconnector body 10M, a manipulation arm 11Y projecting to the backoutside of the cylindrical case 10C and a lock arm 11Z extending justdownwardly from the middle of both of the arms, and the middle of thesearms is turnably held by a pin 10P3 interposed in the cylindrical case10C over the handle 10H.

Next, the action arm 11X, the manipulation arm 11Y and the lock arm 11Zwill be described.

<<Action Arm 11X>>

The downward locking claw XK is formed in the distal end of the actionarm 11X, and the action arm 11X is always urged downwardly in thedrawing by the coil spring formed in the inner wall of the cylindricalcase 10C. As the handle 10H is advanced, the locking piece 10X formed onthe side surface of the handle 10H is also advanced and finally engageswith the locking claw XK of the action arm 11X in a state that themutual connectors are completely fitted and thereafter, the releaselever 11 inhibits the handle 10H from being retracted. In the case ofretracting the handle 10H, the following manipulation arm 11Y isdepressed.

<<Manipulation Arm 11Y>>

The manipulation arm 11Y projects from the back of the cylindrical case10C to the outside and when the manipulation arm 11Y is depressed, theaction arm 11X of the release lever 11 is swung clockwise and isreleased from locking in the handle 10H.

<<Lock Arm 11Z>>

The lock arm 11Z has a lock hole 11H (FIG. 1C) in the lower end.

In a completely fitted state, the lock hole 11H of the lock arm 11Z ispositioned on a moving course of a plunger 13P (see FIG. 2) of anelectromagnetic coil 13, but in a half fitted state, the lock arm 11Z isslightly shifted from a normal position and the lock hole 11H isdisplaced from the moving course of the plunger 13P (see FIG. 2) of theelectromagnetic coil 13.

Also, excitation of the electromagnetic coil 13 is started when a systemof the power supplying side decides that the connectors are fitted byconnection between signal terminals of the power supplying sideconnector and the power receiving side connector.

Hence, in the completely fitted state, by excitation of theelectromagnetic coil 13, the plunger 13P moves from the electromagneticcoil 13 and enters into this lock hole 11H and thereby, a turn of thelock arm 11Z is locked. Therefore, even when the lock arm 11Z attemptsto be unlocked by depressing the manipulation arm 11Y of the releaselever 11 accidentally during power supplying, the action arm 11X cannotmove since the lock arm 11Z is locked by the plunger 13P of theelectromagnetic coil 13, with the result that the handle 10H and thelever 10L are also maintained in a locked state, so that detachment atthe time of power supplying is prevented surely.

Also, when the electromagnetic coil 13 is demagnetized simultaneouslywith the completion of charging, the plunger 13P is retractedinstantaneously by a resilient force of a coil spring 13F and the lockarm 11Z is unlocked.

Also, in the half fitted state, even when the plunger 13P protrudes fromthe electromagnetic coil 13 by excitation of the electromagnetic coil13, the plunger 13P cannot enter the lock hole 11H and the lock arm 11Zis not locked.

In addition, the lock hole 11H may be formed in any region of therelease lever 11 without forming the lock arm 11Z, but when the lock arm11Z is formed thus, flexibility of the layout of the electromagneticcoil 13 improves by selecting the lock arm 11Z in any shape and length.

<Feature of the Present Disclosure: Installation of Microswitch inDistal End of Plunger>

The present disclosure is characterized in that a microswitch 14 (seeFIG. 2) is installed in the distal end of the plunger 13P. A mountingstructure and a function of this microswitch 14 will be described basedon FIGS. 2 to 4.

FIG. 2 is a longitudinal sectional view taken on a plane perpendicularto a shaft direction of the back half part of the cylindrical case 10C,and the electromagnetic coil 13 in which the microswitch 14 is installedas a premise will be first described based on FIG. 2.

<Mounting Position and Function of Electromagnetic Coil 13>

In FIG. 2, in this cylindrical case 10C, the bifurcated lever supportpieces 10LR, 10LL formed in the distal end of the lever 10L are pivotedby the pin 10P2 inserted into a horizontally long hole 10V of a boss10B1 projected on an inner wall of the cylindrical case 10C and a shafthole 10N formed in a side wall of the handle 10H.

<<Primary Lock>>

Grip manipulation of the lever 10L advances the handle 10H, and thehandle 10H has trough shape in a longitudinal section in this region,and multiple electric wire cables W, W are received inside the handle10H and pass through the connector body 10M. The advance of the handle10H also presses the connector body 10M forward, and finally fits theconnector body 10M into a power receiving side connector 20 and also,the release lever 11 locks the handle 10H and accordingly locks thelever 10L (primary lock).

<<Secondary Lock>>

The lock arm 11Z of the release lever 11 extends downward and has thelock hole 11H in the lower end, and the cylindrical case 10C is providedwith the electromagnetic coil 13 as opposed to this lock hole 11H andwhen the electromagnetic coil 13 is excited in a completely fittedstate, the plunger 13P is extended from the electromagnetic coil 13 andis inserted into the lock hole 11H to lock the lock arm 11Z (secondarylock). Also, by releasing excitation of the electromagnetic coil 13 atthe completion of charging, the release lever 11 can be manipulated andthe electromagnetic coil 13 for malfunction prevention can also be usedas means for half fitting prevention.

Even when the electromagnetic coil 13 is excited in a half fitted state,the lock hole 11H of the lock arm 11Z is positioned on an operating lineof the plunger 13P, so that the extended plunger 13P cannot be insertedinto the lock hole 11H and accordingly, the lock arm 11Z is not locked.

<Mounting Structure of Microswitch 14 Adopted by the Present Disclosure>

Then, according to the present disclosure, the microswitch 14 is mountedin the cylindrical case 10C so as to be positioned in the distal end ofthe plunger 13P. The distal end of the plunger 13P is constructed so asto press a lever 14L in a state that the electromagnetic coil 13 isexcited and the plunger 13P protrudes from the lock hole 11H of the lockarm 11Z. When the lever 14L is pressed, a moving contact 14C is pushedto turn on the microswitch 14 and charging is started.

Hence, when the system of the power supplying side decides that theconnectors are fitted by connection between signal terminals of thepower supplying side connector and the power receiving side connector,the electromagnetic coil 13 is excited and the plunger 13P protrudesfrom the lock hole 11H of the lock arm 11Z and presses the lever 14L ofthe microswitch 14 and the moving contact 14C is pushed to turn on themicroswitch 14 and thereby, charging is started.

<Operation of Microswitch 14 Adopted by the Present Disclosure>

Next, an operation of the microswitch 14 adopted by the presentdisclosure will be described based on FIGS. 3 to 5. FIG. 3A is aperspective view of a state before the microswitch operates, and FIG. 3Bis a partially sectional plan view in the vicinity of the microswitch ofFIG. 3A, and FIG. 4A is a perspective view of a state in which themicroswitch according to the present disclosure operates in a completelyfitted state, and FIG. 4B is a partially sectional plan view in thevicinity of the microswitch of FIG. 4A.

<<Case of Completely Fitting Power Supply Connector>>

When the lever 10L is further gripped and the mutual connectors arecompletely fitted (fully fitted), as shown in FIGS. 4A and 4B, the lockhole 11H of the lock arm 11Z is positioned on the operating line of theplunger 13P of the electromagnetic coil 13, so that when theelectromagnetic coil 13 is excited by connection between the signalterminals, the plunger 13P enters the lock hole 11H of the lock arm 11Zand protrudes from the lock hole 11H and presses the lever 14L of themicroswitch 14 and the moving contact 14C is pushed to turn on themicroswitch 14 and charging is started.

Conventionally, the electromagnetic coil is excited and also charging isstarted when the system of the power supplying side decides that theconnectors are fitted by connection between the signal terminals of theconnectors. In this case, as described in FIG. 6(2), charging is startedin a half fitted state in which the lever is not gripped completely, sothat subsequent separation between the power terminals causes trouble inwhich an arc discharge occurs.

However, according to the present disclosure, even when the system ofthe power supplying side decides that the connectors are fitted byconnection between the signal terminals of the connectors and theelectromagnetic coil is excited, charging is not started yet. Then, whenthe plunger 13P presses the lever 14L of the microswitch 14 byexcitation of the electromagnetic coil 13, charging is started. The factthat the plunger 13P presses the lever 14L of the microswitch 14 meansthat the mutual connectors are in a completely fitted state and the lockarm 11Z is locked (in a state that the mutual connectors are halffitted, the lock arm 11Z is not locked since the lock hole 11H of thelock arm 11Z is displaced from the course of the plunger 13P), and thelock arm 11Z is locked, so that the mutual terminals are not separatedand accordingly, an arc discharge does not occur.

<<Case of Half Fitting Power Supply Connector>>

FIG. 5A is a perspective view of the case where the microswitchaccording to the present disclosure operates in a half fitted state, andFIG. 5B is a partially sectional plan view in the vicinity of themicroswitch of FIG. 5A. When the lever 10L is insufficiently gripped,the power supply connector is in a half fitted state and as shown inFIGS. 5A and 5B, the lock arm 11Z is displaced from a completely fittedposition (see 11Z of FIGS. 5A and 5B) and accordingly, the lock hole 11His not positioned on the operating line of the plunger 13P of theelectromagnetic coil 13, so that even when the electromagnetic coil 13is excited to operate the plunger 13P, the plunger 13P abuts on theperipheral edge of the lock hole 11H of the lock arm 11Z and cannotenter the lock hole 11H. Therefore, the lever 14L of the microswitch 14does not make contact with the moving contact 14C, and a chargingcircuit remains off and charging is not started.

Hence, even when some shock is applied to detach the connectors, the arcdischarge does not occur between the terminals since charging is notstarted originally.

<Conclusion>

According to the present disclosure as described above, when theelectromagnetic coil 13 is excited to operate the plunger 13P, in thecompletely fitted state, the plunger 13P enters the lock hole 11H andpresses the lever 14L of the microswitch 14 and charging is started.During the charging, the lock arm 11Z is locked, so that even when ashock is applied, the mutual power terminals are not separated andaccordingly, an arc discharge does not occur. Also, in the half fittedstate, the plunger 13P cannot enter the lock hole 11H, so that theplunger 13P cannot press the lever 14L of the microswitch 14 andaccordingly, the microswitch 14 remains off and charging is not started.

Therefore, even when a shock is applied to separate the mutual powerterminals in the half fitted state, the arc discharge does not occursince a charging current does not flow originally.

According to the present disclosure thus, in both cases of thecompletely fitted state and the half fitted state, the arc dischargedoes not occur between the terminals and there is no fear of damagingthe terminals.

Also, by releasing excitation of the electromagnetic coil at thecompletion of charging, the release lever can be manipulated and theelectromagnetic coil for malfunction prevention can also be used asmeans for half fitting prevention.

Also, flexibility of the layout of the electromagnetic coil improves byforming the lock arm branched from the release lever and selecting itslock arm in any shape and length.

The present application is based on Japanese Patent Application No.2011-113932 filed on May 20, 2011, the contents of which areincorporated herein by reference.

INDUSTRIAL APPLICABILITY

By the above configuration of the present disclosure, an arc dischargeprevention connector that prevents arc discharge from occurring on powerterminals can be obtained.

REFERENCE SIGNS LIST

-   10: HALF FITTING PREVENTION CONNECTOR-   10B1,10B2: BOSS-   10C: CYLINDRICAL CASE-   10H: HANDLE-   10L: LEVER-   10LR,10LL: LEVER SUPPORT PIECE-   10M: CONNECTOR BODY-   10N: SHAFT HOLE-   10P1: LEVER SHAFT-   10P2: PIN-   10S: COIL SPRING-   10T1: POWER TERMINAL-   10T2: COMMUNICATION TERMINAL-   10V: HORIZONTALLY LONG HOLE-   10X: LOCKING PIECE-   11: RELEASE LEVER-   11H: LOCK HOLE-   11X: ACTION ARM-   11Y: MANIPULATION ARM-   11Z: LOCK ARM-   13: ELECTROMAGNETIC COIL-   13F: COIL SPRING-   13P: PLUNGER-   14: MICROSWITCH-   14C: MOVING CONTACT-   14L: LEVER-   W: ELECTRIC WIRE CABLE

The invention claimed is:
 1. A half fitting prevention connector,comprising: a cylindrical case; a connector body that is slidablyaccommodated in a front half part of the cylindrical case and has asignal terminal; a lever that is rotatably attached to the cylindricalcase; and a release lever having an engaging piece which engages with alocking piece for preventing a returning operation of the lever or theconnector in a state that the connector body is fitted with a matingconnector by a rotational operation of the lever, wherein the releaselever has a lock hole; wherein an electromagnetic coil having a plungeris provided on the cylindrical case; wherein a microswitch for startingcharging by a pressing operation of the plunger is provided on thecylindrical case, the plunger being arranged so as to face themicroswitch; wherein the electromagnetic coil is excited by connectionbetween the signal terminal of the connector body and a signal terminalof a mating connector, and thereby moving the plunger toward themicroswitch; and wherein the release lever is rotatable so that theplunger can enter the lock hole to press the microswitch in a state thatthe connector body is completely fitted with the mating connector andthe plunger cannot enter the lock hole in a state that the connectorbody is half fitted with the mating connector.
 2. The half fittingprevention connector according to claim 1, wherein the release lever canbe manipulated by releasing excitation of the electromagnetic coil whenthe charging is the completed.
 3. The half fitting prevention connectoraccording to claim 1, wherein a lock arm is branched from the releaselever; and wherein the lock hole is formed in the lock arm.